ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1c%28cccc1%29C%28c2ccccc2%29N3CCN%28CC3%29C%5CC%3DC%5Cc4ccccc4/file?format=sdf&get3d=True  -- c1c%28cccc1%29C%28c2ccccc2%29N3CCN%28CC3%29C%5CC%3DC%5Cc4ccccc4 could not be loaded.